/*
 * Copyright (c) 2010, VeRSI Consortium
 *   (Victorian eResearch Strategic Initiative, Australia)
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the VeRSI, the VeRSI Consortium members, nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package versi.vitro.oaiserviceprovider.xml;

import java.io.IOException;
import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;

import org.apache.log4j.Logger;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;

/**
 * Service implementing {@link XmlDomBuilder}.
 */
public class XmlDomBuilderImpl implements XmlDomBuilder {

    /** log4j instance. */
    static final Logger LOGGER = Logger.getLogger(XmlDomBuilderImpl.class);

    /** XML Document builder. */
    DocumentBuilder builder;

    /**
     * Default Constructor.
     */
    public XmlDomBuilderImpl(DocumentBuilder builder) {
	this.builder = builder;
    }

    /** {@inheritDoc} */
    public Document parse(InputStream inputStream) {
	try {
	    return builder.parse(inputStream);
	} catch (SAXException saxException) {
	    String message = "Document builder failed to parse data. ";
	    LOGGER.fatal(message, saxException);
	    throw new RuntimeException(message, saxException);
	} catch (IOException ioException) {
	    String message = "Document builder failed to read data. ";
	    LOGGER.fatal(message, ioException);
	    throw new RuntimeException(message, ioException);
	}
    }
}
